The goal of the project is to develop and evaluate practical sequences of techniques for remediation of soil contaminated with complex (i.e. organic and inorganic) substances in order to minimize the volume of soil that needs to be relocated, transported and landfilled. Soil contaminated with a mixture of PAH (polyaromathic hydrocarbons) and CCA (chromated copper arsenate) will be used in the experiment.

Soil chemical extraction in combination with mechanical separation of soil particles, concentration and consequent stabilisation of the concentrate will be tested in the laboratory and full-scale field experiments. Simultaneous extraction of mixed contaminants and safe landfilling of soil with redox sensitive elements (e.g. arsenic) are still challenging tasks and will be addressed here. Leaching and extraction tests, toxicity measurements speciation of contaminants, mineralogical analyses, geochemical modelling and equilibrium calculations will be performed to evaluate the impact of the soil remediation techniques on contaminant fate. A mobile soil washing equipment provided by the project partner RagnSells will be used in field. The project results will be disseminated to the scientific community through (at least two) publications in international journals, participation in workshops and national and international conferences and will form a basis for a licentiate (dr) and master theses.